Homomorphic operation accelerator and homomorphic operation performing device including the same

Abstract

A homomorphic operation accelerator includes a plurality of circuits and a homomorphic operation managing circuit. The plurality of circuits may perform homomorphic operations. The homomorphic operation managing circuit may receive ciphertext data, homomorphic encryption information and homomorphic operation information from an external device. The homomorphic operation managing circuit may activate or deactivate each of a plurality of enable signals applied to the plurality of circuits based on the homomorphic encryption information and the homomorphic operation information. The homomorphic operation managing circuit may activate or deactivate each of the plurality of circuits based on the plurality of enable signals. The homomorphic encryption information may be associated with a homomorphic encryption algorithm used to generate the ciphertext data. The homomorphic operation information may be associated with the homomorphic operations to be performed on the ciphertext data.

Description

CROSS-REFERENCE TO RELATED APPLICATION[0001]This application is based on and claims priority under 35 USC § 119 to Korean Patent Application No. 10-2020-0131125, filed on Oct. 12, 2020, in the Korean Intellectual Property Office (KIPO), the disclosure of which is incorporated by reference herein in its entirety.BACKGROUND1. Field[0002]Example embodiments relate generally to semiconductor integrated circuits, and more particularly to a homomorphic operation accelerator and a homomorphic operation performing device including the homomorphic operation accelerator.2. Descriptions about the Related Art[0003]A homomorphic encryption technology supports operations such as a computation operation, a search operation and / or an analysis operation in encrypted state. Recently, the homomorphic encryption technology is becoming more crucial as leakage of personal information becomes an increasing problem. However, a size of a homomorphic ciphertext encrypted according to the homomorphic encrypti...

AI Technical Summary

Benefits of technology

Example embodiments of this patent may provide a device that can perform homomorphic operations efficiently using less hardware resources. The device receives homomorphic encryption information and homomorphic operation information and selectively deactivates certain circuits based on this information. This results in a significant reduction in the usage of hardware resources required for homomorphic encryption algorithms. Overall, this device enables faster and more secure homomorphic operations.

Problems solved by technology

Recently, the homomorphic encryption technology is becoming more crucial as leakage of personal information becomes an increasing problem.

However, a size of a homomorphic ciphertext encrypted according to the homomorphic encryption technology may reach several tens of times a size of a plaintext, and a computational complexity of operations supported by the homomorphic encryption technology may also be very high.

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